Bavarian Ancient Meteorite Hypothesis Refuted, Gently but Crushingly

I've told you before about the Chiemgau Impact Hypothesis, where a small group of researchers cultivate a minority view of a glaciogenic lake basin in Bavaria as a meteorite crater dating from the 1st Millennium BC. Here on Aard I've published a paper in collaboration with geologists Robert Huber and Robert Darga where we explain that it's an unlikely fringe idea. And now a peer-reviewed paper (pay wall) has appeared in Antiquity where the hypothesis is refuted, gently but crushingly.

Gerhard Doppler and colleagues at the Geology Service of the Bavarian State Board for the Environment explain the geology of Lake Tüttensee and offer new radiocarbon dates from a drill core in the lake sediments, demonstrating that indeed, the basin formed at the end of the Ice Age just as every German geologist has known for a century or more.

The idea of a meteorite impact during the Iron Age has been advocated by the Chiemgau Impact Research Team (to which most of the authors of the Antiquity article belong) and has been eagerly taken up by the media. However, multiple geological, archaeological and astronomical arguments are contrary to this interpretation. Moreover, new data show that the Tüttensee basin originated not 2500 years ago but 12 500 years ago, i.e. at the end of the Ice Age. We can only conclude that the interpretation of the Phaethon myth by Rappenglück et al. (2010) is pure speculation.

The Chiemgau group, characteristically, respond with an ad hoc hypothesis: they suggest (without any evidence) that the sediment sequence studied by Doppler et al. actually formed beside the lake and has slid into the "crater" some time after an impact in the 1st millennium BC.

More like this

Update 13 December: Florian at Astrodictum Simplex has translated the whole entry into German. Thank you, Florian! Update 21 December: German pop-sci web zine Scinexx reports on the poor status of the impact hypothesis and refers to this blog entry. They also mention a really weird idea of the CIRT…
Shortly after my buddy Jeff Medkeff died in 2008, a joint book review of ours was published in Skeptic Magazine. Here we criticised a book by Alan Bond and Mark Hempsell, two aeronautics engineers, where they claimed that a 7th century BC cuneiform tablet from Mesopotamia described an asteroid…
20 years ago, radiocarbon dating was transformed by the widespread adoption of AMS analysis, accelerator mass spectroscopy. Willard Libby's original scintillation-counting method demanded large sample sizes and a lot of time per sample. The sample size meant that many interesting things couldn't be…
As discussed here repeatedly before, the eastern coast of Sweden is in continual flux because of post-glacial shoreline displacement. Since the inland ice melted away and relieved its pressure on the land over 10 000 years ago, the dent made by the ice has been rebounding: first very quickly, then…

Excellent. But it's always the same when refuting marginal ideas and pseudoscience, isn't it. There's always a "could have been" come-back. Somewhere on Aard have you got a delightful post on that Bosnian "pyramid"? I should search.